I cannot get saxon9he (saxonhe9-2-0-6j.zip) to work with the wtp xslt eclipse plugin (i tried both 3.5.2 and 3.6.0M6 with the corresponding plugin versions).
To cite my posting on saxon-help:

I have the same problem as described on http://sourceforge.net/tracker/index.php?func=detail&aid =2910299&group_id=29872&atid=397617
It is not possible to use saxon 9 HE with the xslt plugin of eclipse
wtp, because edition.properties is not found in the classpath.
Michael Kay says about this:
"This looks like a fairly complex issue relating to the unusual class
loader structure in Eclipse. "
Do i have any chance to succeed with the saxon9he/eclipse combo?
I already put edition.properties everywhere in the classpath but no luck.

And Michael Michael Kay responded:

Have you tried raising this on an Eclipse forum? They did the integration of
Saxon into Eclipse in the first place, they know how it was done, and
presumably if anyone does it anew for a new Saxon release, it will be them
that does it. Generally, I don't get involved in integrating Saxon into the
many different environments where people run it, as one can't be expert in
all of them.

I'm afraid with integration issues like this (for the open source product) I
have to fall back on the community to provide the answers. Eclipse isn't
something I use or understand myself. I know it's an important platform for
a significant number of users, but it's also a very complex one.

I'm still looking for a way to get XSD 1.1 alternate types support in eclipse to tackle a practical challenge at hand.

I got the impression that an upcoming xerces-j release will provide this functionality.

Do you have any advice how I can play with that today, probably based on some nightly build .jar files?

Adrian

Xerces-J 2.10 when it is released will allow for the XSD 1.1 validation support. Unfortunately you'll have to use the Ant tasks currently to test it out, as the built in Xerces-J in eclipse is 2.9, and doesn't support the validation. The validator will need to be updated to work with Xerces-J 2.10 when it is available.

Xerces-J 2.10 will also allow the use of the PsychoPath XPath 2.0 processor which is part of the wst.xsl component for validating Assertions in XSD 1.1.